Development of metakaolin–fly ash based geopolymers for fire resistance applications

Zhang, Hai Yan; Kodur, Venkatesh; Qi, Shu Liang; Cao, Liang; Wu, Bo

doi:10.1016/j.conbuildmat.2014.01.040

Cited by 230 publications

(106 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3, the bond strength of geopolymers decreases with increase in FA/(MK+FA) ratio. This trend is in line with that of bending strength of geopolymers with varying FA content (<0.2, and is mainly attributed to incomplete reaction occurring in fly ash) [21]. It is demonstrated in literature [34] through microstructure analysis that fly ash gets incompletely dissolved in alkaline solution, and thus FA-based geopolymers develop early strength at a slow pace.…”

Section: Bond Strength At Ambient Temperaturesupporting

confidence: 60%

“…Mechanical characterization of different types of geopolymers exposed to high temperature also has been studied, but these studies mainly focused on the residual compressive and flexural strength after high temperature exposure [16][17][18][19][20][21], bending and compressive strength at high temperatures [22], and the bond properties of geopolymers with steel plate at high temperature [23,24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Zhang

Kodur

et al. 2015

Cement and Concrete Composites

Self Cite

View full text Add to dashboard Cite

Section: Bond Strength At Ambient Temperaturesupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Zhang

Kodur

et al. 2015

Cement and Concrete Composites

Self Cite

View full text Add to dashboard Cite

“…The existing of silica to form geopolymer chains is compulsory for strong bonds within the polymer chain, generating subsequently a hardened structure [4]. The strength of GPC is also caused by the nature of geopolymer concrete that is self-compacting, avoid creating air traps as well as eliminating pour inside while curing [5,6].…”

Section: Introductionmentioning

confidence: 99%

Properties and Behavior of Geopolymer Concrete Subjected to Explosive Air Blast Loading: A Review

et al. 2017

View full text Add to dashboard Cite

Abstract. The severe damage to civilian buildings, public area, jet aircraft impact and defense target under explosive blast loading can cause a huge property loss. Most of researcher discusses the topics on design the concrete material model to sustain againts the explosive detonation. The implementation of modern reinforcement steels and fibres in ordinary Portland cement (OPC) concrete matrix can reduce the extreme loading effects. However, most researchers have proved that geopolymer concrete (GPC) has better mechanical properties towards high performance concrete, compared to OPC. GPC has the high early compressive strength and high ability to resist the thermal energy from explosive detonation. In addition, OPC production is less environmental friendly than geopolymer cement. Geopolymer used can lead to environmental protection besides being improved in mechanical properties. Thus, this paper highlighted on an experimental, numerical and the analytical studies cause of the explosive detonation impact to concrete structures.

show abstract

“…Geopolymers have cementitious properties and can be composed from natural raw materials or residues from various sources, provided that these residues are rich in amorphous or semi-crystalline aluminosilicates, which through heat treatment become more reactive and alkaline [1]. Studies about the functions and behavior of raw materials involving kaolinite and other clays were initially used in 1974 and 1975.…”

Section: Introductionmentioning

confidence: 99%

“…The search for alternative materials that could reduce energy demand and pollutants gases increased in recent years [1]. In this context, the development of geopolymers, formed through the activation of aluminosilicates in strongly alkaline environment, has great potential to replace conventional concrete [2].…”

Section: Introductionmentioning

confidence: 99%

Resistance to compression and analysis of the microstructure of metacaulinite-based geopolmeric mortar

Portela¹,

Manzato²,

Filho³

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

View full text Add to dashboard Cite

Geopolymer binders have been seen as an alternative material for reducing the use of Portland cement due to its excellent mechanical properties and low environmental impact. This article presents geopolymer mortars produced from metacaulinite, from kaolin calcination at 750 ° C for 6 hours. The developed geopolymers were synthesized with potassium hydroxide and potassium hydroxide silicate as activators mixed with metakaolin, cement and sand. The compressive strength tests were performed at the ages of 7, 14 and 28 days. The geopolymer microstructure was observed by scanning electron microscopy (SEM). Samples presented maximum performance of compressive strength of 58 Mpa, with a dense and homogeneous microstructure.

show abstract

Development of metakaolin–fly ash based geopolymers for fire resistance applications

Cited by 230 publications

References 15 publications

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Properties and Behavior of Geopolymer Concrete Subjected to Explosive Air Blast Loading: A Review

Resistance to compression and analysis of the microstructure of metacaulinite-based geopolmeric mortar

Contact Info

Product

Resources

About